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Finding the Fourth Proportional to 125,466.69, 173,121.69 and 71,018.58

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Solution

The fourth proportional to 125,466.69, 173,121.69 and 71,018.58 is: 97,992.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,466.69 : 173,121.69 = 71,018.58 : x
  2. Step 2: Convert to fraction form
    125,466.69/173,121.69 = 71,018.58/x
  3. Step 3: Cross multiply
    125,466.69x = 173,121.69 × 71,018.58
  4. Step 4: Simplify right side
    125,466.69x = 12,294,856,591.00
  5. Step 5: Solve for x
    x = 12,294,856,591.00/125,466.69
  6. Step 6: Final answer
    x = 97,992.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.